NDLI: Analysis of severely affected patients with dihydropyrimidine dehydrogenase deficiency reveals large intragenic rearrangements of DPYD and a de novo interstitial deletion del(1)(p13.3p21.3)

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Analysis of severely affected patients with dihydropyrimidine dehydrogenase deficiency reveals large intragenic rearrangements of DPYD and a de novo interstitial deletion del(1)(p13.3p21.3)

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Analysis of severely affected patients with dihydropyrimidine dehydrogenase deficiency reveals large intragenic rearrangements of DPYD and a de novo interstitial deletion del(1)(p13.3p21.3)

Content Provider	Springer Nature Link
Author	Kuilenburg, André B. P. Meijer, Judith Mul, Adri N. P. M. Hennekam, Raoul C. M. Hoovers, Jan M. N. Die Smulders, Christine E. M. Weber, Peter Mori, Andrea Capone Bierau, Jörgen Fowler, Brian Macke, Klaus Sass, Jörn Oliver Meinsma, Rutger Hennermann, Julia B. Miny, Peter Zoetekouw, Lida Vijzelaar, Raymon Nicolai, Joost Ylstra, Bauke Rubio Gozalbo, M. Estela
Copyright Year	2009
Abstract	Dihydropyrimidine dehydrogenase (DPD) deficiency is an infrequently described autosomal recessive disorder of the pyrimidine degradation pathway and can lead to mental and motor retardation and convulsions. DPD deficiency is also known to cause a potentially lethal toxicity following administration of the antineoplastic agent 5-fluorouracil. In an ongoing study of 72 DPD deficient patients, we analysed the molecular background of 5 patients in more detail in whom initial sequence analysis did not reveal pathogenic mutations. In three patients, a 13.8 kb deletion of exon 12 was found and in one patient a 122 kb deletion of exon 14–16 of DPYD. In the fifth patient, a c.299_302delTCAT mutation in exon 4 was found and also loss of heterozygosity of the entire DPD gene. Further analysis demonstrated a de novo deletion of approximately 14 Mb of chromosome 1p13.3–1p21.3, which includes DPYD. Haploinsufficiency of NTNG1, LPPR4, GPSM2, COL11A1 and VAV3 might have contributed to the severe psychomotor retardation and unusual craniofacial features in this patient. Our study showed for the first time the presence of genomic deletions affecting DPYD in 7% (5/72) of all DPD deficient patients. Therefore, screening of DPD deficient patients for genomic deletions should be considered.
Starting Page	581
Ending Page	590
Page Count	10
File Format	PDF
ISSN	03406717
Journal	Human Genetics
Volume Number	125
Issue Number	5-6
e-ISSN	14321203
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-03-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human Genetics Metabolic Diseases Gene Function Molecular Medicine
Content Type	Text
Resource Type	Article
Subject	Genetics Genetics (clinical)

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Analysis of severely affected patients with dihydropyrimidine dehydrogenase deficiency reveals large intragenic rearrangements of DPYD and a de novo interstitial deletion del(1)(p13.3p21.3)